CN207738775U - A kind of shaft furnace stock gas tapping equipment and shaft furnace - Google Patents
A kind of shaft furnace stock gas tapping equipment and shaft furnace Download PDFInfo
- Publication number
- CN207738775U CN207738775U CN201721592347.5U CN201721592347U CN207738775U CN 207738775 U CN207738775 U CN 207738775U CN 201721592347 U CN201721592347 U CN 201721592347U CN 207738775 U CN207738775 U CN 207738775U
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- shaft furnace
- stock gas
- gas
- cloth tube
- stock
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Abstract
The utility model discloses a kind of shaft furnace stock gas tapping equipments, including cloth tube, delivery line and gas outlet, wherein cloth tube upper end is connected with the furnace charge tripper at the top of shaft furnace, and lower end is deeply to the preheating section upper end of shaft furnace；Delivery line is connected to cloth tube and gas outlet；Gas outlet is connected to delivery line and external environment.The device makes stock gas flow through cloth tube discharge, disposably solves the problems, such as that reduction gas is unevenly distributed, charge preheating is slow and stock gas dust content is more by coupling stock gas tapping equipment with roof material distributing pipe.The utility model discloses a kind of shaft furnace including the shaft furnace stock gas tapping equipment simultaneously.
Description
Technical field
The utility model is related to non-technical field of blast furnace process more particularly to a kind of non-blast furnace process gas-based reduction shaft furnaces
Stock gas tapping equipment and shaft furnace configured with the device.
Background technology
It is limited with the increasingly reduction and the increasingly raising of environmental consciousness, the development of blast furnace smelting technology of coking coal resource
System, non-blast furnace process become the smelting technique being concerned.Gas-based shaft kiln is as common non-blast furnace direct reduction equipment because of it
Pollutant discharge amount significantly reduces, water consumption is few, noise is small and has very strong competitiveness and development potentiality.
The agent structure of traditional gas-based shaft kiln generally include top loading system, middle part reduction section, lower part setting it is cooling and
Discharge system.One stock gas delivery pipe being connected to external environment is usually set on the side wall on the top of its reduction section, it is former
Gas is inputted by reduction shaft furnace section stock gas bustle pipe nozzle, and reduction reaction occurs with stove internal oxidition pelletizing in uphill process, is reached
Reduction section top is discharged by furnace roof coal device exhaust pipe.However, since all also Primordial Qi are by a furnace roof coal on reduction section top
Gas delivery pipe is discharged, and easily influences the distribution situation of furnace reduction gas, causes different zones temperature difference in stove larger, for example,
The stove inner periphery reduction frequent temperature of flow of air is higher, and it is relatively low that center restores the slow temperature of flow of air so that pelletizing degree of metalization produces
Raw fluctuation, bulk metal rate are relatively low.Secondly, top gas delivery pipe and furnace charge cloth tube are mutual indepedent, there are charge preheatings slowly,
Stock gas dust content is more, and subsequently washing dedusting, cooling process pressure are big, and water consumption is big.
Therefore, so that the also Primordial Qi in stove is uniformly distributed, improve charge preheating rate and reduce stock gas dust
Content becomes non-blast furnace process field technical problem urgently to be resolved hurrily.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of shaft furnace stock gas tapping equipment, by by stove
Top coal gas tapping equipment is coupled with roof material distributing pipe, so that stock gas is flowed through cloth tube discharge, disposably solves reduction qi leel
Cloth is uneven, charge preheating is slow and stock gas dust content more than problem.
A kind of shaft furnace stock gas tapping equipment of foundation the utility model, including cloth tube, delivery line and gas outlet,
Wherein, cloth tube upper end is connected with the furnace charge tripper at the top of shaft furnace, and lower end is deeply to the preheating section upper end of shaft furnace；Export
Pipe is connected to cloth tube and gas outlet；Gas outlet is connected to delivery line and external environment.
Further, the lower end of cloth tube is enclosed in circular uniformly arrangement, each cloth tube by circular stock gas
Pipe communicates with each other, and delivery line is connected to stock gas bustle pipe and gas outlet.
Further, the lower end layering of cloth tube is uniformly arranged in concentric ring-shaped, the cloth tube being located on same annulus
It is communicated with each other by individual stock gas bustle pipe.
Further, two adjacent stock gas bustle pipes are communicated with each other by communicating pipe, and it is maximum that delivery line is connected to diameter
Stock gas bustle pipe and gas outlet.
Further, it is uniformly distributed in communicating pipe between two adjacent stock gas bustle pipes.
Further, the angle between two adjacent communicating pipe is equal to the two adjacent clothes being located on same annulus
The central angle of pipe.
Further, the lower end layering of cloth tube is uniformly arranged in concentric ring-shaped, is located on the maximum annulus of diameter
Cloth tube is communicated with each other by stock gas bustle pipe, be located at different annular on and two adjacent cloth tubes by communicating pipe each other
Connection.
Further, which is characterized in that be evenly arranged with multiple gas collection holes on the tube wall of each cloth tube lower end.
Further, gas collection hole point multilayer is along the tube wall that cloth tube even circumferential is distributed in cloth tube lower end.
According to a kind of shaft furnace of the utility model, it includes the shaft furnace stock gas tapping equipments of any of the above-described.
Due to being used in upper technical solution, the utility model has the following advantages that compared with prior art：
(1) the utility model couples stock gas tapping equipment with roof material distributing pipe, and stock gas is made to flow through cloth tube
After be discharged shaft furnace, inside cloth tube with the furnace charge of downlink heat exchange and dust removal by filtration occur for the stock gas of uplink, enhance stove
The heat exchange of top coal gas and furnace charge, reduces by 10~21 DEG C of stock gas discharge temperature, and energy consumption reduces by 4~7kgce/t.DRI, improves
Shaft furnace capacity usage ratio.
(2) mobile filter bed is done with downlink furnace charge, dust content in stock gas is made to reduce by 50% or so, reduced follow-up
Dedusting pressure.
(3) the single position stock gas tapping equipment of tradition is compared, increases multiple stock gas collection gas ports, can make in stove
Each position stock gas is uniformly discharged, and the tolerance being discharged in each position unit interval in stove is almost the same, furnace reduction qi leel cloth
More uniformly, shaft furnace center Gas Flow and temperature are improved, and the Temperature Distribution of shaft furnace cross section is more uniform, accelerate straight
Reduction rate is connect, shaft furnace DRI pelletizing product qualities are improved, productivity improves 6~13%.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model from the following description of the accompanying drawings of embodiments will
It becomes apparent and is readily appreciated that, wherein：
Fig. 1 is the sectional view of the shaft furnace stock gas tapping equipment according to the utility model.
Fig. 2 is another sectional view of the shaft furnace stock gas tapping equipment according to the utility model.
Reference sign：
1 cloth tube, 2 gas outlets, 3 delivery lines, 4 stock gas bustle pipes, 5 gas collection holes, 6 shaft furnaces, 7 communicating pipes.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
Fig. 1 and Fig. 2 shows one of the shaft furnace stock gas tapping equipment according to the utility model from different perspectives respectively
A embodiment.In the present embodiment, shaft furnace stock gas tapping equipment includes connection furnace charge powder device (not shown) and shaft furnace 6
The cloth tube 1 of preheating section upper end space, the gas outlet 2 for being connected to 1 inside and outside environment of shaft furnace, stock gas bustle pipe 4, gas-guide tube
3 and communicating pipe 7.Wherein, stock gas bustle pipe 4 is for being connected to each cloth tube 1, and communicating pipe 7 is for being connected to adjacent furnace roof coal
Gas bustle pipe 4, delivery line 3 are then used to be connected to stock gas bustle pipe 4 and gas outlet 2.Also Primordial Qi flows from bottom to top inside shaft furnace 1
It is dynamic, reduction reaction occurs with top-down furnace charge, forms stock gas.After the stock gas of high temperature reaches preheating section top,
Enter cloth tube 1 from 1 bottom of cloth tube, enters stock gas bustle pipe 4 in cloth tube 1 and 4 connectivity part of stock gas bustle pipe, flow into
The stock gas of internal layer stock gas bustle pipe 4 by communicating pipe 7 enter outer layer stock gas bustle pipe 4, later by delivery line 3,
2 discharge shaft furnace of stock gas outlet.
Specifically, the upper end of cloth tube 1 is connected with the furnace charge tripper positioned at the top of shaft furnace 6, by pellet from tripper
It is delivered in shaft furnace 6；Deeply to the preheating section upper end of shaft furnace, stock gas enters from the discharge port of 1 bottom of cloth tube for its lower end
To inside cloth tube 1.The stock gas of uplink carries out heat convection in cloth tube 1 with the furnace charge of downlink, while filtering loss of sheet
The part dust particles carried in top coal gas.1 upper end of multiple cloth tubes is connected with tripper, and lower end is preferably in circular row
Cloth is integrally formed umbrella-shaped structure.It is arranged such convenient for collecting the stock gas of the different location in stove.1 lower end of cloth tube is set
Be equipped with several gas collection holes 5, it is preferable that gas collection hole 5 can point multilayer be distributed in 1 lower end of cloth tube along the even circumferential of cloth tube 1
Tube wall on, enter inside cloth tube convenient for more stock gases in the unit interval.
Cloth tube 1, stock gas bustle pipe 4 and communicating pipe can be there are many arrangement forms.In Fig. 1 and reality shown in Fig. 2
It applies in example, the lower end layering of cloth tube 1 is uniformly arranged in concentric ring-shaped, the annulus number of plies N=2, the number n of every layer of cloth tube 1
=10, those skilled in the art can change the number n of annulus number of plies N and every layer of cloth tube 1 according to operating mode and production requirement.It is adjacent
Horizontal sextant angle α=360/n of cloth tube 1.The quantity of stock gas bustle pipe 4 is equal with the number of plies N of donut, is located at same circle
Cloth tube 1 on ring is communicated with each other by individual stock gas bustle pipe 4.Pass through communicating pipe 7 between adjacent stock gas bustle pipe 4
It communicates with each other, the stock gas of inflow internal layer stock gas bustle pipe 4 is made to enter the stock gas bustle pipe 4 of outer layer by communicating pipe 7.
Preferably, may be uniformly distributed in communicating pipe 7 between two adjacent stock gas bustle pipes 4, i.e., adjacent two communicating pipes 7 it
Between angle β be equal to be located at same annulus on two adjacent cloth tubes 1 between central angle alpha.Delivery line 3 only needs connection straight
Maximum (outermost layer) the stock gas bustle pipe 4 of diameter and gas outlet 2.
Alternatively, under the specific operations such as such as small-scale production, if 1 negligible amounts of required cloth tube, also may be used
Stock gas bustle pipe 4 is omitted, is directly connected to cloth tube 1 with gas outlet 2 by delivery line 3.
In another embodiment of the utility model, it can will also be located at the cloth tube on the annulus of diameter maximum (outermost layer)
1 is communicated with each other by stock gas bustle pipe 4, and by adjacent two cloth tubes 1 in different annular by communicating pipe 7 each other
Connection.The stock gas collected by inner-layer cloth expects pipe 1 can be by the successively flowing outward of communicating pipe 7, until entering outermost stove
Top coal gas bustle pipe 4, later by delivery line 3,2 discharge shaft furnace 6 of stock gas outlet.
Using the shaft furnace and Classical Shaft Furnace of the shaft furnace stock gas tapping equipment configured with the utility model respectively to equivalent
Ore smelted, and the smelting cycle, energy consumption level and productivity of the two are compared, the results are shown in Table 1：
Table 1
Wherein, when (1) recovery time refers to the reduction needed for the DRI (direct reduced iron) for obtaining same metal rate 90%
Between；
(2) productivity refers to the productivity of unit interval.
Comparing result shows：With the shaft furnace of the prior art, discharged using the shaft furnace stock gas configured with the utility model
The shaft kiln directly reduced iron smelting cycle of device shortens 20-35min, reduces by 10~21 DEG C of stock gas discharge temperature, energy consumption drop
Low 6~13kgce/t.DRI improves shaft furnace capacity usage ratio, realizes efficient low-consume production.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (10)
1. a kind of shaft furnace stock gas tapping equipment, which is characterized in that include cloth tube, delivery line and gas outlet, wherein
The cloth tube upper end is connected with the furnace charge tripper at the top of shaft furnace, and lower end is goed deep into the preheating section of the shaft furnace
End；
The delivery line is connected to the cloth tube and the gas outlet；
The gas outlet is connected to the delivery line and external environment.
2. shaft furnace stock gas tapping equipment according to claim 1, which is characterized in that the lower end of the cloth tube is in circle
Cyclic annular uniformly arrangement, each cloth tube are communicated with each other by circular stock gas bustle pipe, described in the delivery line connection
Stock gas bustle pipe and the gas outlet.
3. shaft furnace stock gas tapping equipment according to claim 2, which is characterized in that the lower end of the cloth tube is layered
It uniformly arranges in concentric ring-shaped, is located at the cloth tube on same annulus by the individual stock gas bustle pipe each other
Connection.
4. shaft furnace stock gas tapping equipment according to claim 3, which is characterized in that two adjacent furnace roof coals
Gas bustle pipe is communicated with each other by communicating pipe, the delivery line connection maximum stock gas bustle pipe of diameter and the outlet
Mouthful.
5. shaft furnace stock gas tapping equipment according to claim 4, which is characterized in that the communicating pipe is uniformly distributed in
Between two adjacent stock gas bustle pipes.
6. shaft furnace stock gas tapping equipment according to claim 5, which is characterized in that two adjacent communicating pipes
Between angle be equal to be located at same annulus on two adjacent cloth tubes central angle.
7. shaft furnace stock gas tapping equipment according to claim 2, which is characterized in that the lower end of the cloth tube is layered
Uniformly arrange in concentric ring-shaped, be located at the maximum annulus of diameter on the cloth tube by the stock gas bustle pipe each other
Connection, in different annular and two adjacent cloth tubes are communicated with each other by communicating pipe.
8. according to claim 1-7 any one of them shaft furnace stock gas tapping equipments, which is characterized in that each cloth
Multiple gas collection holes are evenly arranged on the tube wall of pipe lower end.
9. shaft furnace stock gas tapping equipment according to claim 8, which is characterized in that the gas collection hole divides multilayer along institute
Cloth tube even circumferential is stated to be distributed on the tube wall of the cloth tube lower end.
10. a kind of shaft furnace, which is characterized in that include claim 1-9 any one of them shaft furnace stock gas tapping equipments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721592347.5U CN207738775U (en) | 2017-11-24 | 2017-11-24 | A kind of shaft furnace stock gas tapping equipment and shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721592347.5U CN207738775U (en) | 2017-11-24 | 2017-11-24 | A kind of shaft furnace stock gas tapping equipment and shaft furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207738775U true CN207738775U (en) | 2018-08-17 |
Family
ID=63116127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721592347.5U Expired - Fee Related CN207738775U (en) | 2017-11-24 | 2017-11-24 | A kind of shaft furnace stock gas tapping equipment and shaft furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207738775U (en) |
-
2017
- 2017-11-24 CN CN201721592347.5U patent/CN207738775U/en not_active Expired - Fee Related
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Effective date of registration: 20190102 Granted publication date: 20180817 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220102 Granted publication date: 20180817 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180817 Termination date: 20181124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |